Going purely from memory, it's as Chula mentioned, and I believe it's Dmaj with a 4/4 time. So, you'd have thus:
Meter: 4/4
Key: Dmaj
Form: Going from
this very straight forward explanation of form, you could easily pick it apart yourself. You can't expect others to do all your homework for you.
On a side note, I had no idea that Genesis' ABACAB was named after the songs form.
On a side, side note, that was pretty funny Blarg.